Boat Handling and Safety
USCG Rules of The Road
The Navigation Rules are much like the rules of the road on the highway. They establish a consistent way to navigate safely and avoid collisions when two boats are crossing paths, are on course to meet head-on, or when one boat wishes to overtake another.
US Aids To Navigation Brochure
This is a very helpful document, it's basically a condensed version of the above book which every boater should know.
Abbreviated Guide To Navigation Rules Of the Road
Safe Boating Checklist and Float Plan